Perkins 4.108, Stop solenoid failure - SailNet Community
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post #1 of 12 Old 12-08-2013 Thread Starter
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Perkins 4.108, Stop solenoid failure

Could anyone advise how to stop a Perkins 4.108 in the event of a stop solenoid failure. As far as I can see there is no mention of how to do this in the owners manual. Thankyou
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post #2 of 12 Old 12-08-2013
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Re: Perkins 4.108, Stop solenoid failure

You could turn your fuel tap off,
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post #3 of 12 Old 12-08-2013
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Re: Perkins 4.108, Stop solenoid failure

Just push the solenoid in by hand.

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post #4 of 12 Old 12-08-2013
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Re: Perkins 4.108, Stop solenoid failure

The Stop Solenoid activates a small push/pull rod on the back of the injection pump that when pulled out somewhat, cuts of the fuel. The injection pump on the 4-108 is on the port side of the engine (in our case) directly below the heat exchanger and can be a little awkward to reach but one needs only two fingers to move the rod an inch or so. If you are worried about the need, I suggest you try it once of twice so that you know how to do it when it might become necessary.

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Re: Perkins 4.108, Stop solenoid failure

I'm having intermittent problems with mine. It's a Perkins 4-154 I tied a small line to the shutdown lever the solenoid pulls. When the electric doesn't work I can just open the engine room door where I tied the other end of the line and pull. This is/was a end of season "fix". My boat still has the pull cable fitting on the pedestal. I plan to go back to a cable system. Don't see a need to make a simple system complicated by making it electrical.
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Re: Perkins 4.108, Stop solenoid failure

Couldn't you block the air intake?
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post #7 of 12 Old 12-08-2013
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Re: Perkins 4.108, Stop solenoid failure

big heavy rag over the intake works wonders.. or a plate, or anything that will stop airflow without damaging the engine or you (I don't recommend your hand, just incase you get a backfire)

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Re: Perkins 4.108, Stop solenoid failure

I did use a plate over the intake the first time. I wouldn't use my hand, bad idea not because of back fire but blood blister from the vacuum. I had heavy equipment buddys at Ferris State University tell me about a runaway diesel. It ate a 3/4 plywood board the used to try to stop it.
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Re: Perkins 4.108, Stop solenoid failure

Ive had two go south on me, Im going with a manual pull back by the helm; Until I do that, I use the method Hylyte mentioned, it' pretty easy access and it don't much movement

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Re: Perkins 4.108, Stop solenoid failure

You may want to take a look at the spring that holds the lever in place, a good spare to have...

The mushroom cap/vent on/over the intake makes it hard to get at, think a rag would have to do the job


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